diff options
Diffstat (limited to 'arch/arm64/kernel/proton-pack.c')
| -rw-r--r-- | arch/arm64/kernel/proton-pack.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/arm64/kernel/proton-pack.c b/arch/arm64/kernel/proton-pack.c index b3801f532b10..5138002d72f1 100644 --- a/arch/arm64/kernel/proton-pack.c +++ b/arch/arm64/kernel/proton-pack.c @@ -1022,6 +1022,11 @@ static int __init parse_spectre_bhb_param(char *str) } early_param("nospectre_bhb", parse_spectre_bhb_param); +static bool spectre_bhb_mitigations_off(void) +{ + return __nospectre_bhb || cpu_mitigations_off(); +} + void spectre_bhb_enable_mitigation(const struct arm64_cpu_capabilities *entry) { bp_hardening_cb_t cpu_cb; @@ -1035,6 +1040,8 @@ void spectre_bhb_enable_mitigation(const struct arm64_cpu_capabilities *entry) /* No point mitigating Spectre-BHB alone. */ } else if (!IS_ENABLED(CONFIG_MITIGATE_SPECTRE_BRANCH_HISTORY)) { /* Do nothing */ + } else if (spectre_bhb_mitigations_off()) { + /* Mitigation disabled on the command line */ } else if (supports_ecbhb(SCOPE_LOCAL_CPU)) { state = SPECTRE_MITIGATED; set_bit(BHB_HW, &system_bhb_mitigations); @@ -1200,6 +1207,6 @@ void spectre_print_disabled_mitigations(void) if (spectre_v4_mitigations_off()) pr_info("spectre-v4 %s", spectre_disabled_suffix); - if (__nospectre_bhb || cpu_mitigations_off()) + if (spectre_bhb_mitigations_off()) pr_info("spectre-bhb %s", spectre_disabled_suffix); } |